functions pre-selection - the spindle speed necessary for the next work can be set - during drilling work by spindle speed change dial. - this pre-selection device improve working efficiency. independent clamp - column, c......functions pre-selection - the spindle speed necessary for the next work can be set - during drilling work by spindle speed change dial. - this pre-selection device improve working efficiency. independent clamp - column, clamp of head can be fixed independent or simultaneous - as operating the button switch in front head position. - the arm clamp is always fixed but be automatically loosen - when being lifted. automatic oil supplier - when the arm is being lifted, - slide way between column sleeve and arm are lubricated automatically. spindle - cr-mo steel spindle is supported by heavy duty weighted, - precision roller bearing and make boring operation possible. - the hardened chrome treated slib surface provides - high precision for long period. clamping system - by motor-driven clamping method, spindle head, column and - arm can be separated respectively with the button operation. - fast clamping speed makes position-setting easy. tool ejector - tool can be ejected easily with lever operation and - spindle precision can be maintained long period.